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What is the main constituent of the atmosphere at ground level? (A) Water (B) Oxygen (C) Nitrogen (D) Carbon dioxide - HSC - SSCE Chemistry - Question 4 - 2008 - Paper 1

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What is the main constituent of the atmosphere at ground level? (A) Water (B) Oxygen (C) Nitrogen (D) Carbon dioxide

Worked Solution & Example Answer:What is the main constituent of the atmosphere at ground level? (A) Water (B) Oxygen (C) Nitrogen (D) Carbon dioxide - HSC - SSCE Chemistry - Question 4 - 2008 - Paper 1

Step 1

Identify the main constituent of the atmosphere at ground level

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Answer

The main constituent of the atmosphere at ground level is Nitrogen. It makes up approximately 78% of the Earth's atmosphere, while Oxygen accounts for about 21%. Other components, such as Argon and Carbon Dioxide, comprise much smaller percentages.

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